Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
yan wang » yuan wang, yang yang, qian wang
hua gene » human gene, a gene, hua ren
yang jie » yang jin, yang di, yang jui
wong sau » wong sam, wong siu, wong shiu
yang ji » yang jui, yang jin, yang di
won sau » wong sam, wong siu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: yan wang wang hua gene ((yang ji) or (yang jie)) ((won sau) or (wong sau)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yan wang wang hua gene ((yang ji) OR (yang jie)) ((won sau) OR (wong sau)) ;*.